Endaweni yangempela yemakethe, izinhlobo ezahlukene zama-powder e-latex zingachazwa njengezimangalisayo. Ngenxa yalokho, uma umsebenzisi engenabo ochwepheshe bakhe bochwepheshe noma imishini yokuhlola, angakhohliswa kuphela ngabathengisi abaningi abangathembekile emakethe. Njengamanje, kunezindlela ezithile zokuthola ezisakazwa ku-inthanethi, njengokuthi: ukubuka ukungcoliswa kwesisombululo esincibilikisiwe kanye nesimo sokwakha ifilimu. Lezi zindlela ziwukuqaphela kuphela okuvela phezulu, futhi azikwazi ukunikeza ukwesekwa kwesayensi kwendlela yokunquma kokugcina komsebenzisi ukuthi umkhiqizo uyamfanele yini. Ngakho-ke, kulesi sihloko, sizosakaza ngokuhlelekile eminye imiqondo eyisisekelo yempuphu yerabha ngaphandle kwezici zokwakheka kwezinto eziyisisekelo, izici, kanye nenhloso yokusebenzisa impuphu yerabha, ukuze ozakwabo bakwazi ukwahlulela ngokwabo ukuthi yini enhle nokuthi yini engalungile.
Okokuqala, umqondo oyisisekelo wokuqonda ukuthi i-powder ye-polymer ehlakazekayo yangempela ikhiqizwa kanjani. (I-powder ye-latex ehlakazekayo kabusha iyi-powder ye-polymer enezakhiwo ezihlakazekayo kabusha eziguqulwa kusuka ku-emulsion ye-resin yokwenziwa ngokufaka ezinye izinto bese yomiswa nge-spray. Uma amanzi esetshenziswa njengendawo yokuhlakazeka, angakha i-emulsion futhi abe ne-powder ye-polymer ehlakazekayo kabusha. I-Redispersible I-powder ye-latex ivame ukuba yi-powder emhlophe, kodwa embalwa ineminye imibala.) I-Redispersible latex powder kufanele ifake: i-polymer resin, izithasiselo, i-colloid evikelayo, i-anti-caking agent. 1. I-polymer resin itholakala engxenyeni eyinhloko yezinhlayiya ze-latex powder, futhi iyisakhi esiyinhloko se-redispersible latex powder, njenge-polyvinyl acetate/vinyl resin, njll. Ikhwalithi ye-polyvinyl acetate emulsion ekhiqizwa abakhiqizi abahlukene kanye nezinqubo ezahlukene izothinta ngqo ikhwalithi ye-powder yerabha ekhiqizwayo. Ukuze kuqinisekiswe ukuzinza kwekhwalithi yomkhiqizo, amafektri amakhulu avamile avame ukusebenzisa uhlobo lwe-polyvinyl acetate ukukhiqiza i-redispersible polymer powder. Lapha singathatha isibonelo esisebenzayo. Ngo-2015, uhlobo oludumile lwasekhaya lwempuphu yerabha yasekhaya lwathatha indawo ye-polyvinyl acetate emulsion eshibhile ukuze kukhiqizwe i-polymer powder ephinde ihlakazeke ngenxa yezizathu zokuphatha. Ngenxa yalokho, kwabangelwa ukuguquguquka okukhulu kwekhwalithi. kwabangela umonakalo ongenakulungiswa. Ngisho nabanye abathengisi abangathembekile lapha bazosebenzisa i-latex emhlophe nokunye okunjalo esikhundleni sokusula uthuli.
2. Izithasiselo (zangaphakathi) zisebenza ndawonye ne-resin ukushintsha i-resin, isibonelo, i-plasticizer enciphisa izinga lokushisa elenza ifilimu le-resin (ngokuvamile ama-resin e-vinyl acetate/ethylene copolymer awadingi ukwengeza ama-plasticizer), akuwona wonke ama-latex Powder anezithasiselo. I-latex powder ephinde ihlakazeke yabakhiqizi abaningi abancane ine-index yokushisa eyakha ifilimu kuphela futhi ayikwazi ukubizwa ngokuthi izinga lokushisa lokuguquka kwengilazi, okuyipharamitha ebalulekile yekhwalithi ye-rubber powder uqobo.
3. I-colloid evikelayo Ungqimba lwezinto ezinamathelayo ezigoqwe phezu kwezinhlayiya ze-latex powder eziphinde zihlakazeke, kanye nomzimba ovikelayo wezinhlayiya eziningi ze-latex powder eziphinde zihlakazeke yi-polyvinyl alcohol. I-polyvinyl alcohol lapha iwukubamba iqhaza enkambisweni yokomisa ngokufafaza ndawonye, kunokuba nje ixutshwe. Nansi enye inkinga evamile emakethe. Ama-workshop amaningi amancane athi akhiqiza i-rubber powder enza inqubo yokuxuba ngokomzimba. Lo mkhiqizo awukwazi ukubizwa ngokuthi i-polymer powder ehlakazekile.
4. Izithasiselo (zangaphandle) Izinto ezengeziwe ukuze kwandiswe ukusebenza kwama-powder e-latex aphinde ahlakazeke, njengokufaka ama-superplasticizer kwamanye ama-powder e-latex acwebezelayo. Njengezithasiselo zangaphakathi, akuzona zonke izinhlobo ze-polymer powder ephinde ihlakazeke esetshenziswayo. Ama-powder e-latex wonke aqukethe lesi sithasiselo.
5. I-anti-caking agent I-filler encane yamaminerali, esetshenziswa kakhulu ukuvimbela i-latex powder ukuthi ingahlangani ngesikhathi sokugcina nokuthuthwa kanye nokwenza lula ukugeleza kwe-latex powder (elahlwa ezikhwameni zephepha noma emathangini). Le filler nayo iyingxenye ezothinta kakhulu izindleko zokukhiqiza kanye nokusebenza kahle kwe-polymer powder ehlakazekayo. Ama-rubber powder amaningi ashibhile emakethe andisa isilinganiso sokugcwalisa ukuze kuncishiswe izindleko. Kalula nje, yisibonakaliso sokuqukethwe komlotha okuvame ukukhulunywa ngaso. Ama-filler ahlukene angezwe ngabakhiqizi abahlukene nawo azothinta umphumela wokuxuba we-rubber powder kanye ne-cement. Ngoba ukubopha kwama-inorganic adhesive ezintweni kufezwa ngesimiso sokushumeka ngomshini
Isikhathi sokuthunyelwe: Ephreli-26-2024